Ideas to get a horse off a ship:

Teddy’s big plank (doesn’t exist)
Tip Rambis (“bad idea”)
Tie rope around horse and lower down (RIP Lucky)
Yardarms? (too hard)
Pile sand next to the ship to use as a ramp (lots of work)
Use the Maester?
Build a gangway using large tree (no large trees)
Stand below to catch horses (dangerous?)
Catch horse with blanket?
Tell Carsen that someone on shore is looking to buy horses?
Beach a second shorter ship beside the Rambis
Can Summer turn horse into a dog?
Sail Rambis back to sea. Float horses off as she sinks (clever)
Wait for foals. (too much time)
Teddy can command horse to leave?
Cut hole in the ship (worked!)